- It is an archwire conforming to the alveolar or dental arch that can be used with dental braces as a source of force in correcting irregularities in the position of the teeth. ₋ Diameter: 0.45 mm. - Size: 18. ₋ Material: Nickel Titanium. ₋ Maxillary/mandibular maxillary. **For further product information, please contact Chat Support**